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236 lines
10 KiB
236 lines
10 KiB
using System;
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using System.Collections.Generic;
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using System.Linq;
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using NLog;
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using NzbDrone.Common.Extensions;
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using NzbDrone.Common.Instrumentation.Extensions;
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using NzbDrone.Common.Serializer;
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using NzbDrone.Core.CustomFormats;
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using NzbDrone.Core.DataAugmentation.Scene;
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using NzbDrone.Core.DecisionEngine.Specifications;
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using NzbDrone.Core.Download.Aggregation;
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using NzbDrone.Core.IndexerSearch.Definitions;
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using NzbDrone.Core.Parser;
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using NzbDrone.Core.Parser.Model;
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namespace NzbDrone.Core.DecisionEngine
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{
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public interface IMakeDownloadDecision
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{
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List<DownloadDecision> GetRssDecision(List<ReleaseInfo> reports, bool pushedRelease = false);
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List<DownloadDecision> GetSearchDecision(List<ReleaseInfo> reports, SearchCriteriaBase searchCriteriaBase);
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}
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public class DownloadDecisionMaker : IMakeDownloadDecision
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{
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private readonly IEnumerable<IDecisionEngineSpecification> _specifications;
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private readonly IParsingService _parsingService;
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private readonly ICustomFormatCalculationService _formatCalculator;
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private readonly IRemoteEpisodeAggregationService _aggregationService;
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private readonly ISceneMappingService _sceneMappingService;
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private readonly Logger _logger;
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public DownloadDecisionMaker(IEnumerable<IDecisionEngineSpecification> specifications,
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IParsingService parsingService,
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ICustomFormatCalculationService formatService,
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IRemoteEpisodeAggregationService aggregationService,
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ISceneMappingService sceneMappingService,
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Logger logger)
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{
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_specifications = specifications;
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_parsingService = parsingService;
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_formatCalculator = formatService;
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_aggregationService = aggregationService;
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_sceneMappingService = sceneMappingService;
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_logger = logger;
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}
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public List<DownloadDecision> GetRssDecision(List<ReleaseInfo> reports, bool pushedRelease = false)
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{
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return GetDecisions(reports, pushedRelease).ToList();
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}
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public List<DownloadDecision> GetSearchDecision(List<ReleaseInfo> reports, SearchCriteriaBase searchCriteriaBase)
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{
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return GetDecisions(reports, false, searchCriteriaBase).ToList();
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}
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private IEnumerable<DownloadDecision> GetDecisions(List<ReleaseInfo> reports, bool pushedRelease, SearchCriteriaBase searchCriteria = null)
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{
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if (reports.Any())
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{
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_logger.ProgressInfo("Processing {0} releases", reports.Count);
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}
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else
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{
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_logger.ProgressInfo("No results found");
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}
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var reportNumber = 1;
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foreach (var report in reports)
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{
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DownloadDecision decision = null;
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_logger.ProgressTrace("Processing release {0}/{1}", reportNumber, reports.Count);
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_logger.Debug("Processing release '{0}' from '{1}'", report.Title, report.Indexer);
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try
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{
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var parsedEpisodeInfo = Parser.Parser.ParseTitle(report.Title);
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if (parsedEpisodeInfo == null || parsedEpisodeInfo.IsPossibleSpecialEpisode)
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{
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var specialEpisodeInfo = _parsingService.ParseSpecialEpisodeTitle(parsedEpisodeInfo, report.Title, report.TvdbId, report.TvRageId, searchCriteria);
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if (specialEpisodeInfo != null)
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{
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parsedEpisodeInfo = specialEpisodeInfo;
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}
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}
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if (parsedEpisodeInfo != null && !parsedEpisodeInfo.SeriesTitle.IsNullOrWhiteSpace())
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{
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var remoteEpisode = _parsingService.Map(parsedEpisodeInfo, report.TvdbId, report.TvRageId, searchCriteria);
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remoteEpisode.Release = report;
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if (remoteEpisode.Series == null)
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{
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var reason = "Unknown Series";
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var matchingTvdbId = _sceneMappingService.FindTvdbId(parsedEpisodeInfo.SeriesTitle, parsedEpisodeInfo.ReleaseTitle, parsedEpisodeInfo.SeasonNumber);
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if (matchingTvdbId.HasValue)
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{
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reason = $"{parsedEpisodeInfo.SeriesTitle} matches an alias for series with TVDB ID: {matchingTvdbId}";
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}
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decision = new DownloadDecision(remoteEpisode, new Rejection(reason));
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}
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else if (remoteEpisode.Episodes.Empty())
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{
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decision = new DownloadDecision(remoteEpisode, new Rejection("Unable to identify correct episode(s) using release name and scene mappings"));
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}
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else
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{
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_aggregationService.Augment(remoteEpisode);
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remoteEpisode.CustomFormats = _formatCalculator.ParseCustomFormat(remoteEpisode, remoteEpisode.Release.Size);
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remoteEpisode.CustomFormatScore = remoteEpisode?.Series?.QualityProfile?.Value.CalculateCustomFormatScore(remoteEpisode.CustomFormats) ?? 0;
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remoteEpisode.DownloadAllowed = remoteEpisode.Episodes.Any();
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decision = GetDecisionForReport(remoteEpisode, searchCriteria);
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}
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}
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if (searchCriteria != null)
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{
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if (parsedEpisodeInfo == null)
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{
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parsedEpisodeInfo = new ParsedEpisodeInfo
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{
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Languages = LanguageParser.ParseLanguages(report.Title),
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Quality = QualityParser.ParseQuality(report.Title)
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};
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}
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if (parsedEpisodeInfo.SeriesTitle.IsNullOrWhiteSpace())
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{
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var remoteEpisode = new RemoteEpisode
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{
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Release = report,
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ParsedEpisodeInfo = parsedEpisodeInfo,
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Languages = parsedEpisodeInfo.Languages
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};
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decision = new DownloadDecision(remoteEpisode, new Rejection("Unable to parse release"));
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}
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}
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}
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catch (Exception e)
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{
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_logger.Error(e, "Couldn't process release.");
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var remoteEpisode = new RemoteEpisode { Release = report };
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decision = new DownloadDecision(remoteEpisode, new Rejection("Unexpected error processing release"));
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}
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reportNumber++;
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if (decision != null)
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{
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var source = pushedRelease ? ReleaseSourceType.ReleasePush : ReleaseSourceType.Rss;
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if (searchCriteria != null)
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{
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if (searchCriteria.InteractiveSearch)
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{
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source = ReleaseSourceType.InteractiveSearch;
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}
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else if (searchCriteria.UserInvokedSearch)
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{
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source = ReleaseSourceType.UserInvokedSearch;
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}
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else
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{
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source = ReleaseSourceType.Search;
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}
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}
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decision.RemoteEpisode.ReleaseSource = source;
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if (decision.Rejections.Any())
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{
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_logger.Debug("Release '{0}' from '{1}' rejected for the following reasons: {2}", report.Title, report.Indexer, string.Join(", ", decision.Rejections));
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}
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else
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{
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_logger.Debug("Release '{0}' from '{1}' accepted", report.Title, report.Indexer);
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}
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yield return decision;
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}
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}
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}
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private DownloadDecision GetDecisionForReport(RemoteEpisode remoteEpisode, SearchCriteriaBase searchCriteria = null)
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{
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var reasons = Array.Empty<Rejection>();
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foreach (var specifications in _specifications.GroupBy(v => v.Priority).OrderBy(v => v.Key))
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{
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reasons = specifications.Select(c => EvaluateSpec(c, remoteEpisode, searchCriteria))
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.Where(c => c != null)
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.ToArray();
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if (reasons.Any())
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{
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break;
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}
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}
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return new DownloadDecision(remoteEpisode, reasons.ToArray());
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}
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private Rejection EvaluateSpec(IDecisionEngineSpecification spec, RemoteEpisode remoteEpisode, SearchCriteriaBase searchCriteriaBase = null)
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{
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try
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{
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var result = spec.IsSatisfiedBy(remoteEpisode, searchCriteriaBase);
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if (!result.Accepted)
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{
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return new Rejection(result.Reason, spec.Type);
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}
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}
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catch (Exception e)
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{
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e.Data.Add("report", remoteEpisode.Release.ToJson());
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e.Data.Add("parsed", remoteEpisode.ParsedEpisodeInfo.ToJson());
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_logger.Error(e, "Couldn't evaluate decision on {0}", remoteEpisode.Release.Title);
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return new Rejection($"{spec.GetType().Name}: {e.Message}");
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}
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return null;
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}
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}
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}
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